Abstract
The Hadamard expansion describes the singularity structure of Green’s operators associated with a normally hyperbolic operator P in terms of Riesz distributions (fundamental solutions on Minkowski space, transported to the manifold via the exponential map) and Hadamard coefficients (smooth sections in two variables, corresponding to the heat Kernel coefficients in the Riemannian case). In this paper, we derive an asymptotic expansion analogous to the Hadamard expansion for powers of advanced/retarded Green’s operators associated with P, as well as expansions for advanced/retarded Green’s operators associated with \(P-z\) for \(z\in \mathbb {C}\). These expansions involve the same Hadamard coefficients as the original Hadamard expansion, as well as the same or analogous (with built-in z-dependence) Riesz distributions.
We’re sorry, something doesn't seem to be working properly.
Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.
Data availability
This publication does not involve any empirical data.
References
Bär, C., Strohmaier, A.: Local index theory for Lorentzian manifolds (2020). https://doi.org/10.48550/ARXIV.2012.01364
Décanini, Y., Folacci, A.: Hadamard renormalization of the stress-energy tensor for a quantized scalar field in a general spacetime of arbitrary dimension. Phys. Rev. D 78, 044025 (2008). https://doi.org/10.1103/PhysRevD.78.044025
Dang, N.V., Wrochna, M.: Complex powers of the wave operator and the spectral action on Lorentzian scattering spaces (2020). https://doi.org/10.48550/ARXIV.2012.00712
Dang, N.V., Wrochna, M.: Dynamical residues of Lorentzian spectral zeta functions. J. de l’Écol. Polytech. Math. 9, 1245–1292 (2022). https://doi.org/10.5802/jep.205
Ronge, L.: Extracting hadamard coefficients from Green’s operators. https://hdl.handle.net/20.500.11811/10718
Bär, C.: Green-hyperbolic operators on globally hyperbolic spacetimes. Commun. Math. Phys. 333(3), 1585–1615 (2014). https://doi.org/10.1007/s00220-014-2097-7
Bär, C., Ginoux, N., Pfaeffle, F.: Wave equations on Lorentzian manifolds and quantization (2007). https://doi.org/10.4171/037
Minguzzi, E.: Convex neighborhoods for Lipschitz connections and sprays. Monatshefte für Math. 177(4), 569–625 (2014). https://doi.org/10.1007/s00605-014-0699-y
Günther, P.: Huygens’ Principle and Hyperbolic Equations. Perspectives in Mathematics, vol. 5. Academy Press, Boston (1988)
Friedlander, F.G.: The Wave Equation on a Curved Space-time. Cambridge Monographs on Mathematical Physics, vol. 2. Cambridge University Press, Cambridge (1975)
Acknowledgements
I would like to thank Matthias Lesch and Koen van den Dungen for their advice and support during the writing of both the thesis that this paper is based on and the paper itself. I also thank the anonymous referee for reviewing my paper and pointing out mistakes that I had overlooked.
Funding
During the writing of this paper, the author was employed at the University of Bonn. No further funding was received.
Author information
Authors and Affiliations
Contributions
The entire paper was written by the author.
Corresponding author
Ethics declarations
Conflict of interest
The author does not have any competing interests.
Consent for publication
This publication does not involve other people’s data.
Ethics approval and consent to participate
This research did not involve any other participants or ethically sensitive issues.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Ronge, L. Hadamard expansions for powers of causal Green’s operators and “resolvents”. Ann Glob Anal Geom 64, 16 (2023). https://doi.org/10.1007/s10455-023-09921-0
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s10455-023-09921-0